3G modem problem on Centos 5.10 with ZTE MF110

[ahmenty]

Hi
I'm having issues getting a ZTE MF110 3G modem running on my Centos 5.10 system.
The issue is that although the device is recognised as a USB serial 3G modem I'm not getting any devices of the form ttyUSBx created.
Here is some information and some logs. Any assistance appreciated:

CentOS release 5.10 (Final)
lsusb -v
Bus 001 Device 002: ID 19d2:2000 ZTE WCDMA Technologies MSM MF627/MF628/MF628+/MF636+ HSDPA/HSUPA
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 0 (Defined at Interface level)
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 64
idVendor 0x19d2 ZTE WCDMA Technologies MSM
idProduct 0x2000 MF627/MF628/MF628+/MF636+ HSDPA/HSUPA
bcdDevice 0.00
iManufacturer 3 ZTE,Incorporated
iProduct 2 ZTE WCDMA Technologies MSM
iSerial 4 P671A2ZTED010000
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 32
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 1 ZTE Configuration
bmAttributes 0xe0
Self Powered
Remote Wakeup
MaxPower 500mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 2
bInterfaceClass 8 Mass Storage
bInterfaceSubClass 6 SCSI
bInterfaceProtocol 80 Bulk-Only
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x01 EP 1 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 0
Device Qualifier (for other device speed):
bLength 10
bDescriptorType 6
bcdUSB 2.00
bDeviceClass 0 (Defined at Interface level)
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 64
bNumConfigurations 1


dmesg:
scsi3 : SCSI emulation for USB Mass Storage devices
usb-storage: device found at 3
usb-storage: waiting for device to settle before scanning
Vendor: ZTE Model: USB SCSI CD-ROM Rev: 2.31
Type: CD-ROM ANSI SCSI revision: 02
sr0: scsi-1 drive
sr 3:0:0:0: Attached scsi CD-ROM sr0
sr 3:0:0:0: Attached scsi generic sg1 type 5
usb-storage: device scan complete

Thank you

[TrevorH]

No, it's not being recognised as a modem. Those kernel log messages at the end show it clearly being recognised as a CD-ROM drive which is how they are designed to appear to Windows users. The "CD" contains drivers for Windows which allow it to be used on that o/s. On Linux you need to find a utility called usb_modeswitch and install and run that to switch the modem from CD-ROM mode to modem mode.